i found this..maybe they have the gasket,
That is the valve egr solenoid gasket.....
https://www.kmotorshop.com/article-d...rburg-30788039
https://www.autopartspro.co.uk/volvo...ntake-manifold
Hope it helps
PS- i guess you can do one with gasket paper...there are some for high temps.
https://www.ebay.co.uk/i/18363025111...UaAiClEALw_wcB